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1:  hw spec

2: power on/off sequence 

    or  programming guide

3: reference board 's display' spec and code (as a reference: eg : in beech, reference 's board use mipi-dsi interface,     Our project still use mipi-dsi interface)

4: find the difference between the reference board and yourself own project

5: power consumption 

    the time that power off-> on needs

   determine which mode to use , sleep in/out or power on/off, according to these 2 factors

for schemetic preparation work:

1.      If there’s test point for peripheral interfaces,e.g. I2C , MIPI DSI, MIPI CSI,  I2S, SPI, SDIO

2.      If there’s test point for peripheral power supplier, clock

3.      If any specific test point for H/W component needed

4.      Pin connections according to IC datasheet (For components that is different from reference board)

5.      If any pin connection changes against reference board)(For components that is the same as reference board))

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